<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>学生成绩案例</title>
    <script>
        var num = prompt("输入个数");
        var str = "";
        for (var i = 1; i <= num; i++) {
            var chengji = prompt("输入成绩");
            str += i + '\t' + chengji + '\n';
        }
        console.log(str);
    </script>
</head>

<body>

</body>

</html>